Fraud is a document inconsistency before it is a loss
Fraudulent freight transactions almost always leave a trace in the paperwork before they show up in the ledger. A rate confirmation issued on a broker's letterhead with a different remit-to address. An invoice from a carrier who does not appear on the bill of lading. A load referenced by two different numbers across a package assembled to look complete.
None of these require sophisticated analysis to detect. They require somebody to compare four documents carefully, on every load, including the ones from clients who have never been a problem. That is the part that does not happen at volume.
Automated cross-verification is valuable here precisely because it is indifferent. It applies the same scrutiny to the thousandth package from a trusted client as to the first from a new one, which is the opposite of how human attention naturally distributes.